Author: mav
Date: Wed Apr 9 10:44:09 2014
New Revision: 264296
URL: http://svnweb.freebsd.org/changeset/base/264296
Log:
When splitting huge unmap requests, do it on sector boundary.
Modified:
head/sys/cam/ctl/ctl_backend_block.c
Modified: head/sys/cam/ctl/ctl_backend_block.c
==============================================================================
--- head/sys/cam/ctl/ctl_backend_block.c Wed Apr 9 08:57:57 2014
(r264295)
+++ head/sys/cam/ctl/ctl_backend_block.c Wed Apr 9 10:44:09 2014
(r264296)
@@ -766,19 +766,21 @@ ctl_be_block_unmap_dev_range(struct ctl_
{
struct bio *bio;
struct ctl_be_block_devdata *dev_data;
+ uint64_t maxlen;
dev_data = &be_lun->backend.dev;
+ maxlen = LONG_MAX - (LONG_MAX % be_lun->blocksize);
while (len > 0) {
bio = g_alloc_bio();
bio->bio_cmd = BIO_DELETE;
bio->bio_flags |= beio->bio_flags;
bio->bio_dev = dev_data->cdev;
bio->bio_offset = off;
- bio->bio_length = MIN(len, LONG_MAX);
+ bio->bio_length = MIN(len, maxlen);
bio->bio_data = 0;
bio->bio_done = ctl_be_block_biodone;
bio->bio_caller1 = beio;
- bio->bio_pblkno = beio->io_offset / be_lun->blocksize;
+ bio->bio_pblkno = off / be_lun->blocksize;
off += bio->bio_length;
len -= bio->bio_length;
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